I dont know but do you know da wae brudda?
Statement 2 is correct.
solids moving into solution is a physical change as the core structure of the molecules remain the same. evaporation of water and crystallization of salt are both physical changes as well.
The water does not change it's H2O chemical makeup because salt was dissolved into it.
Appropriate symbol for an isotope of potassium - 39 corresponding to the isotope notion r A ZX
